On the Reidemeister moves of a classical knot
On the Reidemeister moves of a classical knot
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论古典结的雷德迈斯特动作
DOI:
10.1090/s0002-9939-1983-0719004-4
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发表时间:
1983
影响因子:
0.8
通讯作者:
B. Trace
中科院分区:
文献类型:
--
作者:
B. Trace
We show that under certain reasonable criteria one of the Reidemeister moves can be elminated. It is a well-known fact in classical knot theory that the following three moves, known as the Reidemeister moves, generate all the possible projections of a knot. To be more precise, given two oriented knots, K, and K2, in R3, where K, is in general position with respect to the natural projection 7: R3 R2, having the property that there is an isotopy carrying K, to K2 and preserving the orientations of the knots, then there is a sequence of the Reidemeister moves taking K, to K2 and preserving the orientations of the knots. Note that the last two Reidemeister moves preserve two properties of the knots projection.